diff --git a/packages/bundler/.npmignore b/packages/bundler/.npmignore
deleted file mode 100644
index 999d6ad2a..000000000
--- a/packages/bundler/.npmignore
+++ /dev/null
@@ -1,7 +0,0 @@
-node_modules
-# npmignore
-example
-CHANGELOG.md
-README.md
-util
-test
diff --git a/packages/bundler/CHANGELOG.md b/packages/bundler/CHANGELOG.md
index 8f422d211..87687fcf8 100644
--- a/packages/bundler/CHANGELOG.md
+++ b/packages/bundler/CHANGELOG.md
@@ -5,7 +5,8 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
-<!-- ## Unreleased -->
+## Unreleased
+* Removed non-essential files from published package, such as tests.
 <!-- Add new, unreleased changes here. -->
 
 ## 4.0.4 - 2018-10-18
diff --git a/packages/bundler/package.json b/packages/bundler/package.json
index 4525f5d6f..209e7fbdd 100644
--- a/packages/bundler/package.json
+++ b/packages/bundler/package.json
@@ -9,14 +9,14 @@
   "author": "The Polymer Project Authors",
   "main": "lib/bundler.js",
   "typings": "lib/bundler.d.ts",
-  "files": [
-    "LICENSE",
-    "lib/",
-    "custom_typings/"
-  ],
   "bin": {
     "polymer-bundler": "lib/bin/polymer-bundler.js"
   },
+  "files": [
+    "custom_typings/",
+    "lib/",
+    "!lib/test/"
+  ],
   "dependencies": {
     "@types/babel-generator": "^6.25.1",
     "@types/babel-traverse": "^6.25.3",